Seiko Cal. 6643 - 980

The 6643-980 is a sought-after Automatic piece from Seiko's golden era. With its 22mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-efb2eae41dbd]

Also known as: World Timer, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

Related Models

• Seiko 7076-456
• Seiko 7078-723
• Seiko 5213-346
• Seiko 5244-926
• Seiko 7166-618
• Seiko 7133-646
• Seiko 7142-125
• Seiko 6624-137
• Seiko 6625-323
• Seiko 6116-138
• Seiko 5269-349
• Seiko 4519-671